Cylinder-lubricating means for internal-combustion engines.



L. MILLER. CYLINDER Lumclnma MEANS ron mfnNAL coMausnoN-ENGINES.

"APPLICATION FILED DEC'. 28,'I9I5.

, Patented oet. 8,1918.

ze ,en z5 TE STATES frana* LUTHER MILLER, or RIO, LOUISIANA.

Specification of Letters Patent.

Patented Oct. 8, 1918.

Application filed December 28, 1915. Serial No. 69,7041.

To all 'whom t may concern.'

Bc it known that I, LUTHER MILLER, a citizen lof the United States, residing at Rio, in the parish of Washington and State of Louisiana, have invented certain new and useful Improvements in Cylinder-Lubricating Means for Internal Combustion Engines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in internal combustion engines, and has for its primary object to generally improve and simplify the construction of engines of the double acting type.

Another object is the provision of effective means for lubricating the bore of the cylinder and the piston and means connected with the valve opera-ting cam shaft for mechanically operating the lubricating devices.

With these and other objects in view, the invention consists in the novel construction, arrangement and formation of parts as will be hereinafter specifically described, claimed and illustrated in the accompanying drawing, in which:

Figure 1 represents a vertical central sectional view through the improved engine.

Fig. 2 represents an enlarged sectional view through one of the oil feeding devices.

Referring to the drawing in detail, wherein similar reference numerals designate corresponding parts throughout the .several views, the numerals 5 indicate a pair of uprights or standards arranged in spaced vertical position and supporting at the upper extremities thereof the engine cylinder 6, having combustion chambers 7 at the opposite ends thereof and a water chamber 8 inclosing the side, top and bottom walls of the cylinder.

A crank shaft 9 is rotatably mounted in bearings 10 formed in the uprights 5 and is provided with a pair of crank arms 11 connected by a crank pin 12. The adjacent surfaces of the standards 5 are channeled to provide guides for a cross-head 13 adapted for vertical reciprocation therebetween and connected with the crank pin 12 by a connecting rod. 14. A piston rod 15 is connected with the cross-head 13, extends upwardly through an aperture 16 formed in the lower head or bottom wall of the cylinder 6 and is connecd at its upper extremity with a piston head 17 reciprocably mounted in the bore of the cylinder 6.

The opposite extremities of the cylinder 6 are formed in the side Wall thereof with exhaust ports 18, which are normally closed by exhaust valves 19 associated with closing springs 20. rl`he ends or heads of the cylinder 6 are formed with intake ports 21, in which are arranged intake valves 22, normally retained closed by the tension of springs 23.

The inlet and exhaust valves are mechanically operated by a valve operating gear including a vertically disposed cam shaft 25 rotatably mounted in bearings 26 carried by the cylinder 6 and uprights 5,'and which is connected with the crank shaft 9 by bevel gear wheels 27. Cams 28 are secured to the shaft 25 in line with the stems of the exhaust valves 19 and are adapted to alternately open said valves during the operation of the engine. A horizontally disposed cam shaft 30 is connected with the vertical cam shaft 25 by a train of bevel gears 31 and is provided with a cam 32 adapted to engage the stem of the lower intake valve 22 to open the latter. A horizontally disposed cam shaft 33 is rotatably supported in bearings 34v secured to the upper head of the cylinder 6 and is connected with the vertical cam shaft 25 by bevel gear wheels 35. A cam 36 is secured to the upper cam shaft 33 and is adapted to engage the stem of the upper intake valve 22 to automatically open the latter during operation of the engine.

. The upper cam shaft 33 is connected by bevel gear wheels 38 with a vertically dis` posed shaft 39 supported in bearings 40 arranged on the side of the cylinder 6 opposite .the shaft 25. A worm gear 41 is secured to the lower extremity of the shaft 39 and meshes with a gear wheel 42 carried by the shaft 43, having a crank arm 44 with which is connected the piston 45 of a reciprocating oil pump 46, including the cylinder 47 and piston head 48 reciprocably mounted therein. The cylinder 47 is supported on a bracket 49 secured to one of the uprights 5 and is connected by a lubricant supply pipe 50 with a reservoir (not shown) containing a suitable lubricant for the engine. A check valve 51 is arranged in the feed pipe 50 to prevent discharge of the lubricant from the cylinder 47 during downward movement of the piston head 48. The lower portion of the cylinder 47 is formed with an outlet port 52 with which is connected the oil supply pipe 53, having branch pipes 54 connected therewith and secured in internally screw-threaded apertures 55 formed in plugs 56. The wall of the cylinder 6 adjacent the upper and lower ends thereof is formed with internally screw threaded apertures receiving the externally screw threaded plugs 56, as clearly illustrated in the enlarged detail view in Fig. 2. Nozzles orzrelatively short pipe sections 57 are secured in the inner1 extremities of the bores 55, and communicate with the branch oilpipes 54 and the inner eXtrem-ities of the bores thereof are enlarged to receive the conical lugs 58 carried by valves 59. Each valve 59 is provided with an Vangularly directed stem 60 slidably mounted in an aperture 61 formed in the plug 56 in parallel relation to the: bore 55 .and extending exteriorly of the plug. The exposed end Qfveach valve stem 60 is provided with a nut 62 constituting an abutmentfor one end of a spring 63, the oppositeextremity of which is engaged with the plug 56 to normally retain the valve 59 inv engagement with the discharge end of the nozzle 57, and thus prevent theescape of voil or other lubricant therefrom.V Y

Theouter extremities of thevalve stems 60 are disposed in the path of cams 64 secured V.tothe shaft 53, wherebythe valves areintermittently opened during the operation ofthe engine to permit of the discharge of they lubricantrfor-ced through the pipes 53 and 54 by the pump 46.

During operation of the engine, explosive charges are admitted to the 1 combustion chambers 7 bythe mechanical opening of the valves 22, and subsequent to compression the charge is ignited by a sparlrplug (not shown) fitted in openings, 66 formedin the opposite endsoil the cylinder 6. Duringthe Y scavenging stroke of the piston 17 the .exhaust Valves 19 aremechanioally opened by the cams 28 andthe products of combustion arepermitted to; discharge throughthe .ex.

haust ports 18. During operation of the engine the oil` pump 46 is operated to pump oil through the pipes 53 and 54 and into the vnozzles 57, and during the scavenging stroke of the piston 17, when the exhaust valves 19 are open vand the pressure in the :explosive chambers 7 is reduced the valves 59 are automatically opened by the cams 64thus permitting a quantity of oil to be injected into the cylinder and against the kwalls of the bore thereof.

YWhatI claim is: Y 1. In an internal combustion engine, a

cylinder, an oil port in the cylinder, an in' let pipe arranged in the portnieans `for conducting oil to the pipe, a reciprocating valve stem arranged parallel to the inlet pipe, an angular end formed on f the inner end of the valve stemv and extending across the inner end of said pipe, Vand an inwardly projecting` lug'formed on theanguy lar end for litting the bore of the pipepand means for operating said valve stem.

2. In an internal 4combustion engine, a

cylinder, an oil port arranged in the cylinder, a plug Varranged' in the oilport, a removable inlet pipecarried-by they plug and extending in the cylinder, the inner end of the pipe having the bore thereof flared outthe seat, and meanslfor operating the valve .stem against the tension of said .spring means. i a

In testimony whereof I aiiix my signature 1n presence of two witnesses.

LUTHER MILLER. lVitnesses: Y Y

B. Dj. TALIVlEY, R. M. Millian.

Copies of thislpatent may be obtained ,for five cents each, by addressing the Commissioner of Patents,

Washingtxfm,'Il). C. A y 

